Shells found in Essex County. 63 



TEREBRATULA. Latin, the little peircer. (Jllluding to its sup- 

 posed habits.) 

 SEPTENTRIONALIS. Couthouy. Latin. Western. 



Western Terebratula. 



Shell oval, valves unequal, one very much beaked and perfo- 

 rated, the other flat, both delicately ribbed, immaculate. 



A single specimen of this elegant little shell, was procured 

 from the stomach of a haddock, off Half-way Rock, Aug., 1838. 

 Also found on Lynn Beaches. 

 Boston Journ. Nat. Hist., vol. ii., pi., iii., fig. 18. 

 Cabinet of Dr. Prescott and of the Society. 



The following belong to the Class XII. or MOLLUSCA, i. e. 

 soft bodied animals, with or ivithout shelly coverings, and are com- 

 prised within the 2d order, GASTEROPODA, i. e. having a foot 

 immediately attached to the belly. 



CHITON. Greek, a coat of mail. 

 FULMINATUS. Couthouy. Latin, flamy. 

 Zigzag or flamy Chiton. 



The curious Multivalve scaly shells to which the present is 

 referred, are familiar to every collector of foreign species. Oth- 

 ers of native habitat have been long known, while several new 

 species besides, have been lately discovered and described by 

 Capt. Couthouy. Unlike the specimens from foreign seas, ours 

 are small, yet beautiful. The beauty of C. fulminatus, it needs 

 a close examination to develope ; but like many of the minute 

 shells, is exquisitely marked. 



Valves granulated in quincunx order, dotted with white, and 

 having zigzag markings, on a red ground. 



Found in the stomach of haddock, in Mass, bay, during the 

 summer of 1838, by H. Wheatland ; also found on Lynn beach, 

 by Dr. Wm. Prescott. 



Described at length by Couthouy, in Boston Journ. Nat. 

 Hist., vol. ii., page 80, pi. iii., fig. 19. 



Cabinet of the Society. 



